40128305290 has 16 divisors (see below), whose sum is σ = 72280893312. Its totient is φ = 16040223504.

The previous prime is 40128305281. The next prime is 40128305297. The reversal of 40128305290 is 9250382104.

40128305290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40128305290² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40128305297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1372134 + ... + 1401073.

It is an arithmetic number, because the mean of its divisors is an integer number (4517555832).

Almost surely, 2^40128305290 is an apocalyptic number.

40128305290 is a deficient number, since it is larger than the sum of its proper divisors (32152588022).

40128305290 is a wasteful number, since it uses less digits than its factorization.

40128305290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774661.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 40128305290 its reverse (9250382104), we get a palindrome (49378687394).

The spelling of 40128305290 in words is "forty billion, one hundred twenty-eight million, three hundred five thousand, two hundred ninety".